Abstract: An object of the present invention is to provide a metal elastic element which is suitable for sensing or the like of a fluid pressure change and exhibits favorable resilience even in the case of receiving a sudden pressure change, and also provide a diaphragm using the same. A metal elastic element of the present invention is composed of a two-phase stainless steel having a ?-phase and an ?-phase, wherein the area ratio of the ?-phase is 40% or less, and the two-phase structure is a marble-like metal structure. In the invention, it is preferred that the element has a fiber texture in which <111>? and <110>? are preferentially oriented parallel to the thickness direction.

Abstract: Provided is a Co—Ni-based alloy in which a crystal is easily controlled, a method of controlling a crystal of a Co—Ni-based alloy, a method of producing a Co—Ni-based alloy, and a Co—Ni-based alloy having controlled crystallinity. The Co—Ni-based alloy includes Co, Ni, Cr, and Mo, in which the Co—Ni-based alloy has a crystal texture in which a Goss orientation is a main orientation. The Co—Ni-based alloy preferably has a composition including, in terms of mass ratio: 28 to 42% of Co, 10 to 27% of Cr, 3 to 12% of Mo, 15 to 40% of Ni, 0.1 to 1% of Ti, 1.5% or less of Mn, 0.1 to 26% of Fe, 0.1% or less of C, and an inevitable impurity; and at least one kind selected from the group consisting of 3% or less of Nb, 5% or less of W, 0.5% or less of Al, 0.1% or less of Zr, and 0.01% or less of B.

Abstract: An object of the present invention is to provide a metal elastic element which is suitable for sensing or the like of a fluid pressure change and exhibits favorable resilience even in the case of receiving a sudden pressure change, and also provide a diaphragm using the same. A metal elastic element of the present invention is composed of a two-phase stainless steel having a ?-phase and an ?-phase, wherein the area ratio of the ?-phase is 40% or less, and the two-phase structure is a marble-like metal structure. In the invention, it is preferred that the element has a fiber texture in which <111>? and <110>? are preferentially oriented parallel to the thickness direction.

Abstract: It is an object of the present invention to provide a metal diaphragm capable of achieving a higher strength, excellent corrosion resistance, and a smooth surface condition, and a pressure sensor including the diaphragm. The diaphragm according to the present invention includes a two-phase stainless steel having a composition of 24 to 26 mass % Cr, 2.5 to 3.5 mass % Mo, 5.5 to 7.5 mass % Ni, 0.03 mass % or less C, 0.08 to 0.3 mass % N, and the balance Fe and inevitable impurities, and having a 0.2% proof stress of 1300 MPa or higher.

Abstract: Provided is a Co—Ni-based alloy in which a crystal is easily controlled, a method of controlling a crystal of a Co—Ni-based alloy, a method of producing a Co—Ni-based alloy, and a Co—Ni-based alloy having controlled crystallinity. The Co—Ni-based alloy includes Co, Ni, Cr, and Mo, in which the Co—Ni-based alloy has a crystal texture in which a Goss orientation is a main orientation. The Co—Ni-based alloy preferably has a composition including, in terms of mass ratio: 28 to 42% of Co, 10 to 27% of Cr, 3 to 12% of Mo, 15 to 40% of Ni, 0.1 to 1% of Ti, 1.5% or less of Mn, 0.1 to 26% of Fe, 0.1% or less of C, and an inevitable impurity; and at least one kind selected from the group consisting of 3% or less of Nb, 5% or less of W, 0.5% or less of Al, 0.1% or less of Zr, and 0.01% or less of B.

Abstract: To provide a two-phase stainless steel, a thin sheet material and a diaphragm including the same capable of achieving high strength and excellent corrosion resistance as well as obtaining a smooth surface state. The two-phase stainless steel of the present invention includes a composition of Cr: 24 to 26 mass %, Mo: 2.5 to 3.5 mass %, Ni: 5.5 to 7.5 mass %, C?0.03 mass %, N: 0.08 to 0.3 mass %, remaining part: Fe and unavoidable impurities, in which 2.0 mass % or less of Mn is contained if necessary, and the particle size of inclusion particles including an Al oxide or a Mn oxide caused by unavoidable impurities Al and Mn existing in a metal structure is 3 ?m or less.

Abstract: It is an object of the present invention to provide a metal diaphragm capable of achieving a higher strength, excellent corrosion resistance, and a smooth surface condition, and a pressure sensor including the diaphragm. The diaphragm according to the present invention includes a two-phase stainless steel having a composition of 24 to 26 mass % Cr, 2.5 to 3.5 mass % Mo, 5.5 to 7.5 mass % Ni, 0.03 mass % or less C, 0.08 to 0.3 mass % N, and the balance Fe and inevitable impurities, and having a 0.2% proof stress of 1300 MPa or higher.

Abstract: Provided is a Co—Ni-based alloy in which a crystal is easily controlled, a method of controlling a crystal of a Co—Ni-based alloy, a method of producing a Co—Ni-based alloy, and a Co—Ni-based alloy having controlled crystallinity. The Co—Ni-based alloy includes Co, Ni, Cr, and Mo, in which the Co—Ni-based alloy has a crystal texture in which a Goss orientation is a main orientation. The Co—Ni-based alloy preferably has a composition including, in terms of mass ratio: 28 to 42% of Co, 10 to 27% of Cr, 3 to 12% of Mo, 15 to 40% of Ni, 0.1 to 1% of Ti, 1.5% or less of Mn, 0.1 to 26% of Fe, 0.1% or less of C, and an inevitable impurity; and at least one kind selected from the group consisting of 3% or less of Nb, 5% or less of W, 0.5% or less of Al, 0.1% or less of Zr, and 0.01% or less of B.